Mrs. Guest's Favorite Math Websites

http://www.hoodamath.com/

http://www.math-play.com/math-millionaire.html

http://www.flashspice.com/flashchess/index.html

http://mathplayground.com/

Unit 1 Number Theory

Sieve of Erastosthones (scroll down for the answer key)
http://www.worksheetworks.com/pdf/246/bd52bdb11b7ca/WorksheetWorks_Sieve_of_Eratosthenes_3.pdf

What is a prime number? Watch this video and see.
http://www.mathplayground.com/howto_primenumbers.html
Here is a game to help you with factors of a number:

http://illuminations.nctm.org/activitydetail.aspx?id=12


Video on Divisibility Rules
http://www.youtube.com/watch?v=1ffvCtNZN9Q&safety_mode=true&persist_safety_mode=1&safe=active

Divisibility Rules

Divisibility Rules

2- if the number ends in an even number.

3- if the sum of the digits equals a number that is divisible by 3.



4- if the last two digits are a number that is divisible by 4 or if it ends in 00.



5- it must end in 0 or 5.





6- if it meets the criteria for 2 and 3.



9-if the sum of the digits adds up to a number that is divisible by



10-it must end in zero.
Unit 3

How to Make a Tessellation

http://www.mathwire.com/geometry/tess